From: Simon Wunderlich Date: Tue, 26 Nov 2013 15:07:26 +0000 (+0100) Subject: cfg80211: disable CSA for all drivers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dda444d52496aa8ddc501561bca580f1374a96a9;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git cfg80211: disable CSA for all drivers The channel switch announcement code has some major locking problems which can cause a deadlock in worst case. A series of fixes has been proposed, but these are non-trivial and need to be tested first. Therefore disable CSA completely for 3.13. Signed-off-by: Simon Wunderlich Signed-off-by: Johannes Berg --- diff --git a/net/wireless/core.c b/net/wireless/core.c index 00a65ba3aeaa..52b865fb7351 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -454,6 +454,12 @@ int wiphy_register(struct wiphy *wiphy) /* support for 5/10 MHz is broken due to nl80211 API mess - disable */ wiphy->flags &= ~WIPHY_FLAG_SUPPORTS_5_10_MHZ; + /* + * There are major locking problems in nl80211/mac80211 for CSA, + * disable for all drivers until this has been reworked. + */ + wiphy->flags &= ~WIPHY_FLAG_HAS_CHANNEL_SWITCH; + #ifdef CONFIG_PM if (WARN_ON(wiphy->wowlan && (wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&